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Thread: Green particles on bottom of pool, won't go away

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    Green particles on bottom of pool, won't go away

    Hey guys,
    I've had this pool for a couple of years now, and about halfway through the summer, it ends up looking like the attached images. I've tried algaecide, and my wife has vacuumed it a couple times within a week, and it still comes back. Any ideas what it is or how to get rid of it?
    Edit:
    Levels:
    fc 3
    ta 100
    cya 30
    ph 7
    Other data unavailable
    Attached Images Attached Images
    Last edited by jephph; 07-25-2015 at 06:40 PM. Reason: Added levels
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

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    duraleigh's Avatar
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    Re: Green particles on bottom of pool, won't go away

    Welcome to the forum.

    That's dead algae (mixed with live) and it is because your pool is under chlorinated. You are at the right place if you would like to get rid of that forever.....especially if you want to understand what caused it in the first place.

    In short, more chlorine is needed in your pool. We need to know your current test results to discover just how much more you need, Can you post them?

    I would suggest you read "The ABC's of Pool Water Chemistry" up in Pool School. It is a great start to understanding.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Green particles on bottom of pool, won't go away

    I edited my original post to include my test results.
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

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    Mod Squad jblizzle's Avatar
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    Re: Green particles on bottom of pool, won't go away

    What test kit are you using?

    To eliminate the algae, you need to follow the ShockLevelAndMAINTAIN Process. After passing the 3 criteria to stop, You will need to maintain adequate FC for your CYA level according to the FC/CYA Chart to prevent the algae from returning (no need for algaecides or potions )
    Jason, TFP Moderator
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    Re: Green particles on bottom of pool, won't go away

    Just the bottle of test strips from the pool store. I think the brand is Aquacheck.
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

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    Mod Squad jblizzle's Avatar
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    Re: Green particles on bottom of pool, won't go away

    Test strips are not sufficient for maintaining a pool. They have repeatedly proven to be inaccurate and not reliable.

    To take control you are going to need to invest in one of the Recommended Test Kits and then follow the suggestions I previously made.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Green particles on bottom of pool, won't go away

    Hmm. I live in upstate NY. I only have the pool up for 3 months out of the year. The pool was only $300. How long will the kit last?
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

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    Mod Squad jblizzle's Avatar
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    Re: Green particles on bottom of pool, won't go away

    Should last a few seasons if stored properly.

    With the kit and learning our methods you can guarantee a sparkling pool all summer and not lose precious days/weeks to green water.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    ship of fools's Avatar
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    Re: Green particles on bottom of pool, won't go away

    Quote Originally Posted by jephph View Post
    Hmm. I live in upstate NY. I only have the pool up for 3 months out of the year. The pool was only $300. How long will the kit last?
    Where??
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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    Re: Green particles on bottom of pool, won't go away

    Quote Originally Posted by ship of fools View Post
    Where??
    Not Albany
    Between Syracuse and Watertown. We actually hold records for snowfall in the US.
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

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    Re: Green particles on bottom of pool, won't go away

    Quote Originally Posted by jblizzle View Post
    What test kit are you using?

    To eliminate the algae, you need to follow the ShockLevelAndMAINTAIN Process. After passing the 3 criteria to stop, You will need to maintain adequate FC for your CYA level according to the FC/CYA Chart to prevent the algae from returning (no need for algaecides or potions )
    Will balancing the levels make the algae go away, or do I still have to vacuum it out? And since we've already tried vacuuming several times, do I have to vacuum to waste?
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

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    Re: Green particles on bottom of pool, won't go away

    Quote Originally Posted by jephph View Post
    Will balancing the levels make the algae go away, or do I still have to vacuum it out? And since we've already tried vacuuming several times, do I have to vacuum to waste?
    The SLAM will kill the algae, but removing as much as you can by vacuuming to waste will help the SLAM go quicker.

    Please have a read through Pool School, it will really help you understand how to properly care for your pool.

    I have basically the same pool setup as yours, and the water sparkles! Since following Trouble Free Pool Care it has never looked better.

    You will definitely need one of the recommended test kits. I know it seems like a big cost up front, but it will save you money over the next couple of seasons.

    How are you currently chlorinating the pool?

    Dom
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    Patrick_B's Avatar
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    Re: Green particles on bottom of pool, won't go away

    You don't have too, but it would be helpful to get some of that Algae out before you SLAM, because it will make it easier for your Chlorine to function when you perform the procedure.

    But yes, balancing and keeping it balanced will absolute.y make this go away, and stay away. Now and forever.
    TFP Moderator
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    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
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    Re: Green particles on bottom of pool, won't go away

    Quote Originally Posted by domct203 View Post
    The SLAM will kill the algae, but removing as much as you can by vacuuming to waste will help the SLAM go quicker.

    Please have a read through Pool School, it will really help you understand how to properly care for your pool.

    I have basically the same pool setup as yours, and the water sparkles! Since following Trouble Free Pool Care it has never looked better.

    You will definitely need one of the recommended test kits. I know it seems like a big cost up front, but it will save you money over the next couple of seasons.

    How are you currently chlorinating the pool?

    Dom
    Bleach from the dollar store. How often do you test with the kit? How long does it take to do all the tests?
    Intex Ultra Frame 18'x48" Round Pool (7,500 Gallons, Above Ground)
    Intex 56671EG 2,650 GPH Sand Filter Pump
    Intex Pool Maintenance Kit- Deluxe Edition
    Pool filled from drilled well

  15. Back To Top    #15

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    Re: Green particles on bottom of pool, won't go away

    When you are SLAMing you test as often as possible...every couple of hours because you want to keep adding bleach to maintain your shock level. Once the initial algae kill occurs and your FC starts holding you can reduce the frequency. The test itself takes a couple of minutes. However long it takes you to get a water sample from your pool and add some drops.

    After your water is clear and you pass OCLT you can just test once a day.
    18' x 38' Pool, 3' to 8' Depth
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    ship of fools's Avatar
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    Re: Green particles on bottom of pool, won't go away

    Quote Originally Posted by jephph View Post
    Not Albany
    Between Syracuse and Watertown. We actually hold records for snowfall in the US.
    I went to college (Canton ATC) with a guy from Adams and another from Henderson Harbor. The Henderson guy moved to Parish. So i am familiar with your pain!
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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